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[PATCH v2 1/4] Documentation: mmc: Document mmc aliases

From Douglas Anderson <dianders@chromium.org>
Newsgroups linux.kernel
Subject [PATCH v2 1/4] Documentation: mmc: Document mmc aliases
Date 2016-04-29 19:40 +0200
Message-ID <rtkyv-1rQ-27@gated-at.bofh.it> (permalink)
References <rtkyu-1rQ-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

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From: Jaehoon Chung <jh80.chung@samsung.com>

Now, index of mmc/mmcblk devices is allocated in accordance with probing
time.  If want to use the mmcblk1 for some device, it can use alias.

aliases {
	mmc0 = &mmc0;	/* mmc0/mmcblk0 for eMMC */
	mmc1 = &mmc2;	/* mmc1/mmcblk1 for SD */
	mmc2 = &mmc1;	/* mmc2/mmcblk2 for SDIO*/
};

If there are no corresponding values, it might be allocated with
existing scheme.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
[dianders: just bindings now; mention mmc not just mmcblk]
Signed-off-by: Douglas Anderson <dianders@chromium.org>
---
Changes in v2: None

 Documentation/devicetree/bindings/mmc/mmc.txt | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt
index ed23b9bedfdc..4b5c23e61adb 100644
--- a/Documentation/devicetree/bindings/mmc/mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/mmc.txt
@@ -71,6 +71,10 @@ Optional SDIO properties:
 - wakeup-source: Enables wake up of host system on SDIO IRQ assertion
 		 (Legacy property supported: "enable-sdio-wakeup")
 
+Aliases (Optional):
+- If you want to use the fixed index for devices like mmcX / mmcblkX, should
+be represented in the aliases node using following format "mmc(X)".
+(X is an unique number for the alias.)
 
 MMC power sequences:
 --------------------
@@ -145,3 +149,10 @@ mmc3: mmc@01c12000 {
 		interrupt-names = "host-wake";
 	};
 };
+
+Example with aliases nodes:
+
+aliases {
+	mmc0 = &mmc0;	/* Fixed to mmc0/mmcblk0 for &mmc0 */
+	mmc1 = &mmc2;	/* Fixed to mmc1/mmcblk1 for &mmc2 */
+};
-- 
2.8.0.rc3.226.g39d4020

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[PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering w/ device tree Douglas Anderson <dianders@chromium.org> - 2016-04-29 19:40 +0200
  [PATCH v2 1/4] Documentation: mmc: Document mmc aliases Douglas Anderson <dianders@chromium.org> - 2016-04-29 19:40 +0200
  [PATCH v2 2/4] mmc: read mmc alias from device tree Douglas Anderson <dianders@chromium.org> - 2016-04-29 19:40 +0200
  [PATCH v2 4/4] ARM: dts: rockchip: Add mmc aliases for rk3288 platform Douglas Anderson <dianders@chromium.org> - 2016-04-29 19:40 +0200
  Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Rob Herring <robh+dt@kernel.org> - 2016-04-29 20:20 +0200
    Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Doug Anderson <dianders@chromium.org> - 2016-04-29 21:40 +0200
      Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk  numbering w/ device tree Russell King - ARM Linux <linux@arm.linux.org.uk> - 2016-04-29 22:00 +0200
        Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Doug Anderson <dianders@chromium.org> - 2016-04-29 22:10 +0200
  Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk  numbering w/ device tree Russell King - ARM Linux <linux@arm.linux.org.uk> - 2016-04-29 20:20 +0200
    Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Doug Anderson <dianders@chromium.org> - 2016-04-29 21:50 +0200
      Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk  numbering w/ device tree Russell King - ARM Linux <linux@arm.linux.org.uk> - 2016-04-29 22:00 +0200
        Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Doug Anderson <dianders@chromium.org> - 2016-04-29 22:10 +0200
          Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Doug Anderson <dianders@chromium.org> - 2016-04-29 23:20 +0200
            Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Doug Anderson <dianders@chromium.org> - 2016-04-29 23:40 +0200
              Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk  numbering w/ device tree Russell King - ARM Linux <linux@arm.linux.org.uk> - 2016-04-30 00:00 +0200
                Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Doug Anderson <dianders@chromium.org> - 2016-04-30 00:00 +0200
                Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk  numbering w/ device tree Russell King - ARM Linux <linux@arm.linux.org.uk> - 2016-04-30 00:20 +0200
                Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Doug Anderson <dianders@chromium.org> - 2016-04-30 00:30 +0200
                Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk  numbering w/ device tree Russell King - ARM Linux <linux@arm.linux.org.uk> - 2016-04-30 00:50 +0200
                Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Doug Anderson <dianders@chromium.org> - 2016-04-30 01:10 +0200
                Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Peter Hurley <peter@hurleysoftware.com> - 2016-04-30 02:00 +0200
                Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Peter Hurley <peter@hurleysoftware.com> - 2016-04-30 02:40 +0200
                Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Doug Anderson <dianders@chromium.org> - 2016-04-30 04:30 +0200
                Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk  numbering w/ device tree Russell King - ARM Linux <linux@arm.linux.org.uk> - 2016-04-30 10:40 +0200
                Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Rob Herring <robh+dt@kernel.org> - 2016-04-30 15:30 +0200
                Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Javier Martinez Canillas <javier@dowhile0.org> - 2016-04-30 00:50 +0200
                Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk  numbering w/ device tree Russell King - ARM Linux <linux@arm.linux.org.uk> - 2016-04-30 12:50 +0200
                Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Trent Piepho <tpiepho@kymetacorp.com> - 2016-05-03 21:30 +0200
            Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk  numbering w/ device tree Russell King - ARM Linux <linux@arm.linux.org.uk> - 2016-04-29 23:40 +0200
          Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk  numbering w/ device tree Russell King - ARM Linux <linux@arm.linux.org.uk> - 2016-04-29 23:20 +0200
    Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk  numbering w/ device tree Pavel Machek <pavel@ucw.cz> - 2016-05-04 09:20 +0200
      Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk numbering  w/ device tree Rob Herring <robh+dt@kernel.org> - 2016-05-04 14:30 +0200
        Re: [PATCH v2 0/4] Patches to allow consistent mmc / mmcblk  numbering w/ device tree Pavel Machek <pavel@ucw.cz> - 2016-05-04 14:50 +0200

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